# import numpy as np
# a = np.zeros((3,4))
# print(a)
# print("该矩阵的维度:",a.shape)
# print("该矩阵的行数：",a.shape[0])
# print("该矩阵的列数：",a.shape[1])
#





# import numpy as np
# a = np.linspace(1,10,20)
# print("数组为：",a)
# b = a.reshape(2,10)
# print("矩阵为：",b)
# c = np.sum(b,axis=1)
# print("每行的和：",c)



# import numpy as np
# array = np.arange(10,21,2)
# print(array)
# a = array.reshape(2,3)